One of the most significant contribution is Euler's Formula which relates the value eiθ to sine and cosine. Mainly,when θ = wt (w is omega, representing frequency, and t is time)
Aeiwt = Acos(wt)+Aisin(wt), where cosine is the "real" portion of the number and "sine" is the imaginary.
Another way to think of this is by making an axis system where real numbers are on the horizontal (x-axis) and imaginary number are on the vertical (y-axis) then the cosine value would be the number on the x-axis and the sine would be the number on the vertical axis. (This is similar to how you disect the unit circle.)
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Euler introduced mathematical notation. He made contributions of complex analysis. He introduced the concept of a function, the use of exponential function, and logarithms in analytic proofs. Euler also produced the formula for the Riemann zeta function.
Leonhard Euler was a Swiss mathematician and scientist in the 18th century.
Leonhard Euler has 1 brother,Johann Heinrich Euler and 2 sisters,Maria MagdalenaandAnna Maria.
Leonhard Euler.
Leonhard Euler